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<dt><span class="section"><a href="reference.html#doxygen.tribool_8hpp">Header &lt;boost/logic/tribool.hpp&gt;</a></span></dt>
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<a name="doxygen.tribool_8hpp"></a>Header &lt;<a href="../../../../../boost/logic/tribool.hpp" target="_top">boost/logic/tribool.hpp</a>&gt;</h3></div></div></div>
<pre class="synopsis">

<a class="link" href="../doxygen/tribool_8hpp_1a6c84a165d08c0666137d068d46052df1.html" title="Macro BOOST_TRIBOOL_THIRD_STATE">BOOST_TRIBOOL_THIRD_STATE</a>(Name)</pre>
<pre class="synopsis"><span class="keyword">namespace</span> <span class="identifier">boost</span> <span class="special">{</span>
  <span class="keyword">namespace</span> <span class="identifier">logic</span> <span class="special">{</span>
    <span class="keyword">class</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">;</span>
    <span class="identifier">BOOST_CONSTEXPR</span> <span class="keyword">bool</span> <a class="link" href="../doxygen/tribool_8hpp_1a0ade72577947e2c3ec684c5cd6459ef9.html" title="Function indeterminate"><span class="identifier">indeterminate</span></a><span class="special">(</span><a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">,</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <span class="special">=</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span><span class="special">)</span><span class="special">;</span>
    <span class="identifier">BOOST_CONSTEXPR</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a> <a class="link" href="../doxygen/tribool_8hpp_1ae617fcb3b9f755d3423da171b99a36e5.html" title="Function operator!"><span class="keyword">operator</span><span class="special">!</span></a><span class="special">(</span><a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">)</span><span class="special">;</span>
    <span class="identifier">BOOST_CONSTEXPR</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a> <a class="link" href="../doxygen/tribool_8hpp_1af2e158256e32473ecd8a6930993c4f20.html" title="Function operator&amp;&amp;"><span class="keyword">operator</span><span class="special">&amp;&amp;</span></a><span class="special">(</span><a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">,</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">)</span><span class="special">;</span>
    <span class="identifier">BOOST_CONSTEXPR</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a> <a class="link" href="../doxygen/tribool_8hpp_1af2e158256e32473ecd8a6930993c4f20.html" title="Function operator&amp;&amp;"><span class="keyword">operator</span><span class="special">&amp;&amp;</span></a><span class="special">(</span><a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">,</span> <span class="keyword">bool</span><span class="special">)</span><span class="special">;</span>
    <span class="identifier">BOOST_CONSTEXPR</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a> <a class="link" href="../doxygen/tribool_8hpp_1af2e158256e32473ecd8a6930993c4f20.html" title="Function operator&amp;&amp;"><span class="keyword">operator</span><span class="special">&amp;&amp;</span></a><span class="special">(</span><span class="keyword">bool</span><span class="special">,</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">)</span><span class="special">;</span>
    <span class="identifier">BOOST_CONSTEXPR</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a> <a class="link" href="../doxygen/tribool_8hpp_1af2e158256e32473ecd8a6930993c4f20.html" title="Function operator&amp;&amp;"><span class="keyword">operator</span><span class="special">&amp;&amp;</span></a><span class="special">(</span><span class="identifier">indeterminate_keyword_t</span><span class="special">,</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">)</span><span class="special">;</span>
    <span class="identifier">BOOST_CONSTEXPR</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a> <a class="link" href="../doxygen/tribool_8hpp_1af2e158256e32473ecd8a6930993c4f20.html" title="Function operator&amp;&amp;"><span class="keyword">operator</span><span class="special">&amp;&amp;</span></a><span class="special">(</span><a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">,</span> <span class="identifier">indeterminate_keyword_t</span><span class="special">)</span><span class="special">;</span>
    <span class="identifier">BOOST_CONSTEXPR</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a> <a class="link" href="../doxygen/tribool_8hpp_1ab9710c42a6fcf16e73bca96c9ea04038.html" title="Function operator||"><span class="keyword">operator</span><span class="special">||</span></a><span class="special">(</span><a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">,</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">)</span><span class="special">;</span>
    <span class="identifier">BOOST_CONSTEXPR</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a> <a class="link" href="../doxygen/tribool_8hpp_1ab9710c42a6fcf16e73bca96c9ea04038.html" title="Function operator||"><span class="keyword">operator</span><span class="special">||</span></a><span class="special">(</span><a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">,</span> <span class="keyword">bool</span><span class="special">)</span><span class="special">;</span>
    <span class="identifier">BOOST_CONSTEXPR</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a> <a class="link" href="../doxygen/tribool_8hpp_1ab9710c42a6fcf16e73bca96c9ea04038.html" title="Function operator||"><span class="keyword">operator</span><span class="special">||</span></a><span class="special">(</span><span class="keyword">bool</span><span class="special">,</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">)</span><span class="special">;</span>
    <span class="identifier">BOOST_CONSTEXPR</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a> <a class="link" href="../doxygen/tribool_8hpp_1ab9710c42a6fcf16e73bca96c9ea04038.html" title="Function operator||"><span class="keyword">operator</span><span class="special">||</span></a><span class="special">(</span><span class="identifier">indeterminate_keyword_t</span><span class="special">,</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">)</span><span class="special">;</span>
    <span class="identifier">BOOST_CONSTEXPR</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a> <a class="link" href="../doxygen/tribool_8hpp_1ab9710c42a6fcf16e73bca96c9ea04038.html" title="Function operator||"><span class="keyword">operator</span><span class="special">||</span></a><span class="special">(</span><a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">,</span> <span class="identifier">indeterminate_keyword_t</span><span class="special">)</span><span class="special">;</span>
    <span class="identifier">BOOST_CONSTEXPR</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a> <a class="link" href="../doxygen/tribool_8hpp_1a93cc0db20770c8d31b10c825fbce93a2.html" title="Function operator=="><span class="keyword">operator</span><span class="special">==</span></a><span class="special">(</span><a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">,</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">)</span><span class="special">;</span>
    <span class="identifier">BOOST_CONSTEXPR</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a> <a class="link" href="../doxygen/tribool_8hpp_1a93cc0db20770c8d31b10c825fbce93a2.html" title="Function operator=="><span class="keyword">operator</span><span class="special">==</span></a><span class="special">(</span><a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">,</span> <span class="keyword">bool</span><span class="special">)</span><span class="special">;</span>
    <span class="identifier">BOOST_CONSTEXPR</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a> <a class="link" href="../doxygen/tribool_8hpp_1a93cc0db20770c8d31b10c825fbce93a2.html" title="Function operator=="><span class="keyword">operator</span><span class="special">==</span></a><span class="special">(</span><span class="keyword">bool</span><span class="special">,</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">)</span><span class="special">;</span>
    <span class="identifier">BOOST_CONSTEXPR</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a> <a class="link" href="../doxygen/tribool_8hpp_1a93cc0db20770c8d31b10c825fbce93a2.html" title="Function operator=="><span class="keyword">operator</span><span class="special">==</span></a><span class="special">(</span><span class="identifier">indeterminate_keyword_t</span><span class="special">,</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">)</span><span class="special">;</span>
    <span class="identifier">BOOST_CONSTEXPR</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a> <a class="link" href="../doxygen/tribool_8hpp_1a93cc0db20770c8d31b10c825fbce93a2.html" title="Function operator=="><span class="keyword">operator</span><span class="special">==</span></a><span class="special">(</span><a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">,</span> <span class="identifier">indeterminate_keyword_t</span><span class="special">)</span><span class="special">;</span>
    <span class="identifier">BOOST_CONSTEXPR</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a> <a class="link" href="../doxygen/tribool_8hpp_1af0bdaf72ab49e88a98e9671b1ef35c36.html" title="Function operator!="><span class="keyword">operator</span><span class="special">!=</span></a><span class="special">(</span><a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">,</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">)</span><span class="special">;</span>
    <span class="identifier">BOOST_CONSTEXPR</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a> <a class="link" href="../doxygen/tribool_8hpp_1af0bdaf72ab49e88a98e9671b1ef35c36.html" title="Function operator!="><span class="keyword">operator</span><span class="special">!=</span></a><span class="special">(</span><a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">,</span> <span class="keyword">bool</span><span class="special">)</span><span class="special">;</span>
    <span class="identifier">BOOST_CONSTEXPR</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a> <a class="link" href="../doxygen/tribool_8hpp_1af0bdaf72ab49e88a98e9671b1ef35c36.html" title="Function operator!="><span class="keyword">operator</span><span class="special">!=</span></a><span class="special">(</span><span class="keyword">bool</span><span class="special">,</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">)</span><span class="special">;</span>
    <span class="identifier">BOOST_CONSTEXPR</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a> <a class="link" href="../doxygen/tribool_8hpp_1af0bdaf72ab49e88a98e9671b1ef35c36.html" title="Function operator!="><span class="keyword">operator</span><span class="special">!=</span></a><span class="special">(</span><span class="identifier">indeterminate_keyword_t</span><span class="special">,</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">)</span><span class="special">;</span>
    <span class="identifier">BOOST_CONSTEXPR</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a> <a class="link" href="../doxygen/tribool_8hpp_1af0bdaf72ab49e88a98e9671b1ef35c36.html" title="Function operator!="><span class="keyword">operator</span><span class="special">!=</span></a><span class="special">(</span><a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">,</span> <span class="identifier">indeterminate_keyword_t</span><span class="special">)</span><span class="special">;</span>
  <span class="special">}</span>
<span class="special">}</span></pre>
</div>
<div class="section"><div class="titlepage"><div><div><h3 class="title">
<a name="doxygen.tribool__fwd_8hpp"></a>Header &lt;<a href="../../../../../boost/logic/tribool_fwd.hpp" target="_top">boost/logic/tribool_fwd.hpp</a>&gt;</h3></div></div></div></div>
<div class="section">
<div class="titlepage"><div><div><h3 class="title">
<a name="doxygen.tribool__io_8hpp"></a>Header &lt;<a href="../../../../../boost/logic/tribool_io.hpp" target="_top">boost/logic/tribool_io.hpp</a>&gt;</h3></div></div></div>
<pre class="synopsis"><span class="keyword">namespace</span> <span class="identifier">boost</span> <span class="special">{</span>
  <span class="keyword">namespace</span> <span class="identifier">logic</span> <span class="special">{</span>
    <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> CharT<span class="special">&gt;</span> <span class="keyword">class</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1indeterminate__name.html" title="Class template indeterminate_name">indeterminate_name</a><span class="special">;</span>
    <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> T<span class="special">&gt;</span> 
      <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span> <span class="identifier">T</span> <span class="special">&gt;</span> <a class="link" href="../doxygen/tribool__io_8hpp_1ad803cdc01e5c98195def251a1b9958e0.html" title="Function template get_default_indeterminate_name"><span class="identifier">get_default_indeterminate_name</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>

    <span class="comment">// Returns the character string "indeterminate". </span>
    <span class="keyword">template</span><span class="special">&lt;</span><span class="special">&gt;</span> 
      <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span> <span class="keyword">char</span> <span class="special">&gt;</span> <a name="doxygen.tribool__io_8hpp_1a83bda57daedfd87149c5589b063f414e"></a><span class="identifier">get_default_indeterminate_name</span><span class="special">&lt;</span><span class="keyword">char</span> <span class="special">&gt;</span><span class="special">(</span><span class="special">)</span><span class="special">;</span>

    <span class="comment">// Returns the wide character string L"indeterminate". </span>
    <span class="keyword">template</span><span class="special">&lt;</span><span class="special">&gt;</span> 
      <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_string</span><span class="special">&lt;</span> <span class="keyword">wchar_t</span> <span class="special">&gt;</span> <a name="doxygen.tribool__io_8hpp_1a9a3bf1873bb2b02d6fedf6195acaa603"></a><span class="identifier">get_default_indeterminate_name</span><span class="special">&lt;</span><span class="keyword">wchar_t</span> <span class="special">&gt;</span><span class="special">(</span><span class="special">)</span><span class="special">;</span>
    <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> CharT<span class="special">,</span> <span class="keyword">typename</span> Traits<span class="special">&gt;</span> 
      <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">&gt;</span> <span class="special">&amp;</span> 
      <a class="link" href="../doxygen/tribool__io_8hpp_1a396ae96a4ab99cb4a9217558ec58115a.html" title="Function template operator&lt;&lt;"><span class="keyword">operator</span><span class="special">&lt;&lt;</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">,</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a><span class="special">)</span><span class="special">;</span>
    <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> CharT<span class="special">,</span> <span class="keyword">typename</span> Traits<span class="special">&gt;</span> 
      <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">&gt;</span> <span class="special">&amp;</span> 
      <a class="link" href="../doxygen/tribool__io_8hpp_1abecd76f96ff58ac7ad2c30a130ee44b2.html" title="Function template operator&lt;&lt;"><span class="keyword">operator</span><span class="special">&lt;&lt;</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">,</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span><span class="special">)</span><span class="special">;</span>
    <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> CharT<span class="special">,</span> <span class="keyword">typename</span> Traits<span class="special">&gt;</span> 
      <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_istream</span><span class="special">&lt;</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">&gt;</span> <span class="special">&amp;</span> 
      <a class="link" href="../doxygen/tribool__io_8hpp_1ae0b0f89994bf9c8d742b19add09f1ca4.html" title="Function template operator&gt;&gt;"><span class="keyword">operator</span><span class="special">&gt;&gt;</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_istream</span><span class="special">&lt;</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">,</span> <a class="link" href="../doxygen/classboost_1_1logic_1_1tribool.html" title="Class tribool">tribool</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="special">}</span>
<span class="special">}</span></pre>
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<div class="copyright-footer">Copyright © 2002-2004 Douglas Gregor<p>Use, modification and distribution is subject to the Boost
    Software License, Version 1.0. (See accompanying file
    <code class="filename">LICENSE_1_0.txt</code> or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)</p>
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